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Finding the Fourth Proportional to 3,666.84, 5,498.88 and 1,201.20

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Solution

The fourth proportional to 3,666.84, 5,498.88 and 1,201.20 is: 1,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,666.84 : 5,498.88 = 1,201.20 : x
  2. Step 2: Convert to fraction form
    3,666.84/5,498.88 = 1,201.20/x
  3. Step 3: Cross multiply
    3,666.84x = 5,498.88 × 1,201.20
  4. Step 4: Simplify right side
    3,666.84x = 6,605,254.66
  5. Step 5: Solve for x
    x = 6,605,254.66/3,666.84
  6. Step 6: Final answer
    x = 1,801.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.